Now that he has graduated from high school, Koyomi Araragi’s story ends here. His story is truly over now, but the stories of the girls Koyomi saved - their stories - are not over yet. This is the prequel or sequel to their stories and their struggles.

Now in her third year of middle school, Tsukihi Araragi spends her days living her life unchanged from day to day. Yotsugi Ononoki continues to keep an eye on Tsukihi but makes a big mistake for the first time as he loses focus. To correct the situation, he heads over to Nadeko Sengoku’s house—.

[Source: Crunchyroll]